1 files changed, 35 insertions, 0 deletions
diff --git a/testsuite/systemtap.samples/kmalloc-stacks.stp b/testsuite/systemtap.samples/kmalloc-stacks.stp
new file mode 100644
index 00000000..25a23f2d
--- /dev/null
+++ b/testsuite/systemtap.samples/kmalloc-stacks.stp
@@ -0,0 +1,35 @@
+global kmalloc_stack
+
+function reset_maxaction () %{ 
+        if (CONTEXT && CONTEXT->actioncount) 
+                CONTEXT->actioncount=0; 
+%} 
+
+function write_output()
+{
+	foreach (stack in kmalloc_stack) {
+		log("<hashkey>");
+		print_stack(stack);
+		log("</hashkey>");
+		print("<hashval>");
+		print(sprint(kmalloc_stack[stack]));
+		log("</hashval>");
+		reset_maxaction();
+	}
+}
+
+probe timer.jiffies(5000)
+{
+	write_output();
+	delete kmalloc_stack;
+}
+
+probe kernel.function("__kmalloc")
+{
+	kmalloc_stack[backtrace()]++; 
+}
+
+probe end
+{
+	write_output();
+}